ClearNonLiveTransitions has to hold on to non-map values.

test/mjsunit/accessor-map-sharing.js

 // Copyright 2012 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
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 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --allow-natives-syntax --fast-accessor-properties
+// Flags: --allow-natives-syntax
 
 // Handy abbreviations.
 var dp = Object.defineProperty;
 var gop = Object.getOwnPropertyDescriptor;
 
 function getter() { return 111; }
 function setter(x) { print(222); }
 function anotherGetter() { return 333; }
 function anotherSetter(x) { print(444); }
 var obj1, obj2;
@@ skipping 128 matching lines @@
 assertEquals(setter, gop(obj1, "oscar").set);
 
 // Re-adding the same getter/attributes pair.
 obj1 = {};
 dp(obj1, "papa", { get: getter, configurable: true });
 dp(obj1, "papa", { get: getter, set: setter, configurable: true });
 assertEquals(getter, gop(obj1, "papa").get);
 assertEquals(setter, gop(obj1, "papa").set);
 assertTrue(gop(obj1, "papa").configurable);
 assertFalse(gop(obj1, "papa").enumerable);